Freecad hangs up after first measurement

[psflachglas]

I can measure the first distance with the caliper, after that FreeCad hangs up. I had to create a screenshot with my smartphone. My Screenshot capture software (Greenshot) gets blocked because of that.

Any idea what could be the issue?

OS: Windows 11 build 22631
Word size of FreeCAD: 64-bit
Version: 0.21.2.33771 (Git)
Build type: Release
Branch: releases/FreeCAD-0-21
Hash: b9bfa5c5507506e4515816414cd27f4851d00489
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.3
Locale: German/Switzerland (de_CH)
Installed mods: 
  * Manipulator 1.5.7
  * QuickMeasure 2022.10.28

Flansch1.zip